In addition to these measures, you need to make some changes in your lifestyle. To begin with, you should completely concentrate on what you are encasing your feet with. Shoes with hard soles, slippers of any kind, and flat shoes, all should be simply thrown out the window. The arches of your feet need proper support, and most such footwear either does not provide support or adds unnecessary strain, or both. You should also make sure that the soles of your shoes cushion your feet properly. In order to get relief from the pain, you can also apply an ice pack, which will lessen both the pain and the inflammation. There are some exercises that can also be performed, as well as taping the plantar fascia, but you will need a physiotherapist to show you exactly how these things need to be done.
Corticosteroid injections are typically used much later, when all these measures have failed. These injections give substantial relief, but the injection itself is quite painful, which is why a local anesthetic is often used first. Regular use of these injections will however prove counterproductive, leading to the rupture of the plantar fascia. If you have already taken one corticosteroid injection, you should probably refrain from repeating the treatment. Also, if your doctor’s first line of treatment was the injection, you should probably get a second opinion, or at least visit a physiotherapist instead.
answered by M W